Safety lock mechanism



J. MORRIS.

SAFETY LOCK MECHANISM.

APPLICATION FILED APR. 16, 1920.

1,366,015. Patented Jan. 18,1921.

2 SHEETS-SHEET i.

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,4 TTORNEY r J. MORRIS. SAFETY LOCK MECHANISM.

APPLICATION FILED APR. 16, {920.

1,366,015, mama Jan. 18,1921.

7 2 SHEETS-SHEET 2.

INVENTOR A TTURNE Y UNITED STATES PATENT OFFICE.

JOHN MORRIS, or new YORK, n. Y.

SAFETY LocK MECHANISM.

door at a number of points, thereby not only.

greatly strengthening the door against forcing, but also materially increasing the se curity in event of an attempt to free the door by cutting, because of the existence of a plurality of locking members in unknown locations, all of which would have to be cut. The invention therefore involves the combination on the door of an ordinary or suitable lock, with itsbolt, and a number of bars on the back or in the interior of the door projectable in different directions,

at various points around the edges, and all connected with the look. so as tooperate therewith. Other aspects of the invention will be apparent to those skilled in the art. In the accompanying drawingsforming a part hereof:

Figure 1 is a rear or inner view of a door in its frame, showing a preferred illus trative embodiment of the invention in the unlocked condition;

Fig. 2 is a view on a smaller scale, looking at the outer side. showing the locked condition, a portion of the door being broken away to show parts behind; and

Figs. 3 and 4 are sections, respectively on the lines 3-3 and of Fig. 2. y

The drawing represents a door 1., its frame 2, and hinges 3 by which the door is swung at one side. These may be of any suitable description. A complete lock of the cylinder or similar type is indicated at 4 on the portion of the'door remote from the hinge.

The construction of this lock is not shown as such matters are well understood; 5 is the rotary cylinder or barrel containing the key slot and held immovable by. tumblers in the absence of the key, and 6 is the bolt operated from the cylinder.

The bolt 6 enters a keeper 7 in or on the opposed portion of the door-frame. Other keepers 7 7*, 7 7 and 7 are located at distributed points around the door opening.

The number, position and form of these keepers may vary. Two are shown at top and two at bottom, or what correspond to these locations, and one at the hinge side. The keepers 7 are perforated lugs projecting from an elongated metal plate 8 secured to an edge face of the door opening; the keepers 7 are metal bushings inserted in a beam 9; and the keeper 7 is a socket proeetingfrom a screw-hole base adapted to be secured to the inner face of the frame.

The additional. keepers, whatever their form and arrangement, cooperate with a corresponding number of additional locking members, which are connected with the primary lock, and the form and arrangement OfWlllCh also may be varied. In the particularpreferred embodiment, rods or are disposed at the proper points about the center '13 to secure the desired endwise throw of the bars upon limited turning of the plate, which constitutes in effect a multiple crankarm. The bars are guided and laterally supported at their outer ends in keepers 14:, 14a, 14 14: and 14 on the door. Each bar may he pivoted to a separate lug, or as shown two of the bars may be connected to a common lug. r p p In the illustrated construction one of the lugs 11] also pivotally receives the end of a rod or link 1.5, which is secured to the rear end or a rear extension of the bolt 6 of the key-operated lock. Common operating means are thus provided for connecting the various bars with the lock for actuation therewith.

The mechanism instead of being exposed on the inner or rear faceof the door could of coursebe inclosed. door appears to be equipped merely with the usual lock and there is nothing to indicate the presence or location of the reinforcing and extra-locking bars.

l/Vhat is claimed as newis:

1. The combination on a door, of a lock From the outside the Specification of Letters Patent Patented 2111. 1S, 1921 Application filed April is, 1920. Serial No..374,299.

at one point,a plurality of bars radiating in r difl'erentdirections to lock the door to the frame at a number of other points, a turning plate to which the inner-ends of said bars are connected, and a connection between said 5 turning plate and the lock.

2.'The. combination With a door and a doorframe having a plurality of keepers at different points around the door opening, of

a lock on the door adjacent one edge having a bolt to cooperate with one of said keepers, a plurality of radiating bars movable in different directions on the door to cooperate with the other keepers and a central turning connection between the bars and lock.

JOHN MORRIS. 

